/*
 * ideviceinfo.c
 * Simple utility to show information about an attached device
 *
 * Copyright (c) 2009 Martin Szulecki All Rights Reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA 
 */

#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>

#include <libimobiledevice/libimobiledevice.h>
#include <libimobiledevice/lockdown.h>
#include "common/utils.h"

#define FORMAT_KEY_VALUE 1
#define FORMAT_XML 2

static const char *domains[] = {
	"com.apple.disk_usage",
	"com.apple.disk_usage.factory",
	"com.apple.mobile.battery",
/* FIXME: For some reason lockdownd segfaults on this, works sometimes though 
	"com.apple.mobile.debug",. */
	"com.apple.iqagent",
	"com.apple.purplebuddy",
	"com.apple.PurpleBuddy",
	"com.apple.mobile.chaperone",
	"com.apple.mobile.third_party_termination",
	"com.apple.mobile.lockdownd",
	"com.apple.mobile.lockdown_cache",
	"com.apple.xcode.developerdomain",
	"com.apple.international",
	"com.apple.mobile.data_sync",
	"com.apple.mobile.tethered_sync",
	"com.apple.mobile.mobile_application_usage",
	"com.apple.mobile.backup",
	"com.apple.mobile.nikita",
	"com.apple.mobile.restriction",
	"com.apple.mobile.user_preferences",
	"com.apple.mobile.sync_data_class",
	"com.apple.mobile.software_behavior",
	"com.apple.mobile.iTunes.SQLMusicLibraryPostProcessCommands",
	"com.apple.mobile.iTunes.accessories",
	"com.apple.mobile.internal", /**< iOS 4.0+ */
	"com.apple.mobile.wireless_lockdown", /**< iOS 4.0+ */
	"com.apple.fairplay",
	"com.apple.iTunes",
	"com.apple.mobile.iTunes.store",
	"com.apple.mobile.iTunes",
	NULL
};

static int is_domain_known(char *domain)
{
	int i = 0;
	while (domains[i] != NULL) {
		if (strstr(domain, domains[i++])) {
			return 1;
		}
	}
	return 0;
}

static void print_usage(int argc, char **argv)
{
	int i = 0;
	char *name = NULL;
	
	name = strrchr(argv[0], '/');
	printf("Usage: %s [OPTIONS]\n", (name ? name + 1: argv[0]));
	printf("Show information about a connected device.\n\n");
	printf("  -d, --debug\t\tenable communication debugging\n");
	printf("  -s, --simple\t\tuse a simple connection to avoid auto-pairing with the device\n");
	printf("  -u, --udid UDID\ttarget specific device by its 40-digit device UDID\n");
	printf("  -q, --domain NAME\tset domain of query to NAME. Default: None\n");
	printf("  -k, --key NAME\tonly query key specified by NAME. Default: All keys.\n");
	printf("  -x, --xml\t\toutput information as xml plist instead of key/value pairs\n");
	printf("  -h, --help\t\tprints usage information\n");
	printf("\n");
	printf("  Known domains are:\n\n");
	while (domains[i] != NULL) {
		printf("  %s\n", domains[i++]);
	}
	printf("\n");
}

int main(int argc, char *argv[])
{
	lockdownd_client_t client = NULL;
	lockdownd_error_t ldret = LOCKDOWN_E_UNKNOWN_ERROR;
	idevice_t device = NULL;
	idevice_error_t ret = IDEVICE_E_UNKNOWN_ERROR;
	int i;
	int simple = 0;
	int format = FORMAT_KEY_VALUE;
	const char* udid = NULL;
	char *domain = NULL;
	char *key = NULL;
	char *xml_doc = NULL;
	uint32_t xml_length;
	plist_t node = NULL;

	/* parse cmdline args */
	for (i = 1; i < argc; i++) {
		if (!strcmp(argv[i], "-d") || !strcmp(argv[i], "--debug")) {
			idevice_set_debug_level(1);
			continue;
		}
		else if (!strcmp(argv[i], "-u") || !strcmp(argv[i], "--udid")) {
			i++;
			if (!argv[i] || (strlen(argv[i]) != 40)) {
				print_usage(argc, argv);
				return 0;
			}
			udid = argv[i];
			continue;
		}
		else if (!strcmp(argv[i], "-q") || !strcmp(argv[i], "--domain")) {
			i++;
			if (!argv[i] || (strlen(argv[i]) < 4)) {
				print_usage(argc, argv);
				return 0;
			}
			if (!is_domain_known(argv[i])) {
				fprintf(stderr, "WARNING: Sending query with unknown domain \"%s\".\n", argv[i]);
			}
			domain = strdup(argv[i]);
			continue;
		}
		else if (!strcmp(argv[i], "-k") || !strcmp(argv[i], "--key")) {
			i++;
			if (!argv[i] || (strlen(argv[i]) <= 1)) {
				print_usage(argc, argv);
				return 0;
			}
			key = strdup(argv[i]);
			continue;
		}
		else if (!strcmp(argv[i], "-x") || !strcmp(argv[i], "--xml")) {
			format = FORMAT_XML;
			continue;
		}
		else if (!strcmp(argv[i], "-s") || !strcmp(argv[i], "--simple")) {
			simple = 1;
			continue;
		}
		else if (!strcmp(argv[i], "-h") || !strcmp(argv[i], "--help")) {
			print_usage(argc, argv);
			return 0;
		}
		else {
			print_usage(argc, argv);
			return 0;
		}
	}

	ret = idevice_new(&device, udid);
	if (ret != IDEVICE_E_SUCCESS) {
		if (udid) {
			printf("No device found with udid %s, is it plugged in?\n", udid);
		} else {
			printf("No device found, is it plugged in?\n");
		}
		return -1;
	}

	if (LOCKDOWN_E_SUCCESS != (ldret = simple ?
			lockdownd_client_new(device, &client, "ideviceinfo"):
			lockdownd_client_new_with_handshake(device, &client, "ideviceinfo"))) {
		fprintf(stderr, "ERROR: Could not connect to lockdownd, error code %d\n", ldret);
		idevice_free(device);
		return -1;
	}

	/* run query and output information */
	if(lockdownd_get_value(client, domain, key, &node) == LOCKDOWN_E_SUCCESS) {
		if (node) {
			switch (format) {
			case FORMAT_XML:
				plist_to_xml(node, &xml_doc, &xml_length);
				printf("%s", xml_doc);
				free(xml_doc);
				break;
			case FORMAT_KEY_VALUE:
				plist_print_to_stream(node, stdout);
				break;
			default:
				if (key != NULL)
					plist_print_to_stream(node, stdout);
			break;
			}
			plist_free(node);
			node = NULL;
		}
	}

	if (domain != NULL)
		free(domain);
	lockdownd_client_free(client);
	idevice_free(device);

	return 0;
}